Answer:
Lava from a volcanic eruption hardens into bare rock. Primary succession begins with soil formation. The first stage of succession involves pioneer species. In primary succession, pioneer plants are those that can grow without soil, such as lichens.
Hope it helps
Please mark me as the brainliest
Thank you
Answer:surface area to volume ratio
Cell size is limited by a cell's surface area to volume ratio. A smaller cell is more effective and transporting materials, including waste products, than a larger cell. Cells come in many different shapes. A cell's function is determined, in part, by its shape
Explanation:
A. Humans have either attached earlobes or detached earlobes.
"Mendelian Traits<span> are those </span>traits<span> which follow Mendel's rules of only 2 possible versions of a gene (1 dominant, 1 recessive)."
</span><span>https://www.nlm.nih.gov/exhibition/harrypottersworld/pdf/mendeliantraits.pdf</span>
Answer:
The statement "The stem cells preserved from the umbilical cord of the person" is the BEST source of stem cells and minimizes the risk associated with stem cell transplantation.
Explanation:
On late back before 90s people use to throw away the umbilical cord as well as the blood because they believed it as a medical waste. But, in today's generation parents are found to be storing safely their baby's umbilical cord and the blood as it has the stem cells which can be used against the treatment of various life-threatening and debilitating diseases. It has also shown the visible results in the treatment.
When a cold air mass moves toward a warmer air mass, it causes a cold front. The warm air rises, leaving colder temperatures in the region. On a weather map, a blue line with triangles represents the front.
Please look at diagram below.
